I used 115mm x 43mm oval "cattle" rail to make roof racks for the car. I needed to cap the ends to stop wind noise so I designed these.
Cattle rail can be used for all sorts of things apart from fencing and these end caps finish it off nicely.
I use a dab of Trex to hold them in place but you could also use a rivet or screw.
Part_Studio_1_-_End_capR1.stl | 142.5KB |